| Mathbox for BJ |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > Mathboxes > bj-1uplex | Structured version Visualization version GIF version | ||
| Description: A monuple is a set if and only if its coordinates are sets. (Contributed by BJ, 6-Apr-2019.) |
| Ref | Expression |
|---|---|
| bj-1uplex | ⊢ (⦅𝐴⦆ ∈ V ↔ 𝐴 ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | bj-pr11val 37359 | . . 3 ⊢ pr1 ⦅𝐴⦆ = 𝐴 | |
| 2 | bj-pr1ex 37360 | . . 3 ⊢ (⦅𝐴⦆ ∈ V → pr1 ⦅𝐴⦆ ∈ V) | |
| 3 | 1, 2 | eqeltrrid 2845 | . 2 ⊢ (⦅𝐴⦆ ∈ V → 𝐴 ∈ V) |
| 4 | df-bj-1upl 37352 | . . 3 ⊢ ⦅𝐴⦆ = ({∅} × tag 𝐴) | |
| 5 | p0ex 5320 | . . . 4 ⊢ {∅} ∈ V | |
| 6 | bj-xtagex 37343 | . . . 4 ⊢ ({∅} ∈ V → (𝐴 ∈ V → ({∅} × tag 𝐴) ∈ V)) | |
| 7 | 5, 6 | ax-mp 5 | . . 3 ⊢ (𝐴 ∈ V → ({∅} × tag 𝐴) ∈ V) |
| 8 | 4, 7 | eqeltrid 2844 | . 2 ⊢ (𝐴 ∈ V → ⦅𝐴⦆ ∈ V) |
| 9 | 3, 8 | impbii 210 | 1 ⊢ (⦅𝐴⦆ ∈ V ↔ 𝐴 ∈ V) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 207 ∈ wcel 2119 Vcvv 3432 ∅c0 4268 {csn 4562 × cxp 5623 tag bj-ctag 37328 ⦅bj-c1upl 37351 pr1 bj-cpr1 37354 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2712 ax-rep 5206 ax-sep 5225 ax-nul 5235 ax-pow 5301 ax-pr 5369 ax-un 7685 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-clab 2719 df-cleq 2732 df-clel 2815 df-nfc 2889 df-ne 2936 df-ral 3055 df-rex 3065 df-rab 3393 df-v 3434 df-sbc 3731 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4269 df-if 4462 df-pw 4538 df-sn 4563 df-pr 4565 df-op 4569 df-uni 4846 df-br 5080 df-opab 5142 df-xp 5631 df-rel 5632 df-cnv 5633 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-bj-sngl 37320 df-bj-tag 37329 df-bj-proj 37345 df-bj-1upl 37352 df-bj-pr1 37355 |
| This theorem is referenced by: bj-2uplex 37376 |
| Copyright terms: Public domain | W3C validator |